Frank s



F. S. 000K. WRENCH.

(No' Model.)

No. 452,518. Patented May 19,1891.

jnven'a B07212 S. 000%.

UNITED STATES PATENT OFFICE.

FRANK S. COOK, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE CAPITOL MANUFACTURING COMPANY, OF SAME PLACE.

WRENCH.

SPECIFICATION forming part of Letters Patent No: 452,518,- dated May 19, 1891.

Application filed January 19, 1891. Serial No. 378,372. (No model.)

To all whom it may concern:

Be it known that I, FRANK S. COOK, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in renches, of which the following is a specification.

This invention relates chiefly to pipewrenches or wrenches used in analogous situations. In such wrenches there is usually a vibratory motion of one or the other jaw, causing one jaw to wear out much more rapidly than the other, In ordinary wrenches, therefore, where bothjaws will wearunequally as a rule, thereis no provision for compensating this wear, and the wrench must be thrown away for scrap-iron when too badly worn to be used in one jaw or the other, as neither jaw could feasibly be sharpened in its serrations so as to increase its hold. The life of the wrench would he, therefore, much shortened.

This invention, in order to obviate such waste and disadvantage, consists in employing a jaw reversible as to both faces attached to the handle or shank in such manner that when one face is worn it can be reversed, turned around, and a fresh face presented in opposition tothe other jaw, giving a greater permanency to the wrench, and so, also, that when it is entirely worn on both faces or all faces anew jaw may be substituted.

For the purpose of explaining such invention and also for the purpose of explaining additional features of the invention other than those above enumerated, I have chosen to select a wrench of that type known as a pipe-wrench, and therefore in the accompanying drawings- Figure 1 represents inside elevation and in one position of action, a pipe-wrench with the said improvements applied; Fig. 2, a similar side elevation in a different position of action Fig. 3, a rear elevation of said wrench; Figs. at, 5, (5, and 7, cross-sections on the correspondingly-numbered line in the first figure.

A may be a wooden handle or any appropriate handle, and B a shank of metal. Through this shank may be a straight or inclined perforation, or one allowing a vertical movement of the tang C of the outer jaw l, but preferably it is made in such manner as to allow vertical play of said tang, and provided with a shoulder 0, against which said tang may comeinits adj ustment-s. The tang C has screw-threads c, as shown, upon which works a fluted nut D, arranged in a dice-box or hour-glass'sh'aped recess D, whereby the tang of said outer jaw can be moved inward or outward, or both, against the shoulder in the shank of the handle or main shank,- but as a rule allowed to play slightly in and out, rocking upon the re-entrant shoulders of the recess. A springE will advisably press upon the top of the outer end of the tang or otherwise upon the bottom of the inner end, so as to hold the jaw to the work. The inner jaw, which is fixed to the shank of the handle opposite the outer jaw, has a serrated face e. The inner and opposing jaw, however, which is secured by means of a pin e and ears E, bet-ween which it fits, making a fixed seat, hastwo or more serrated faces 6 so that whenevenone face becomes worn the pin may be drawn out and another face presented. Herein are shown only two faces, but it is obvious that such jaw with suitable provision may be made with three faces or four faces, as desired.

I do not intend to limit myself herein to any particular construction of wrench so far as the removable jaw is concerned, nor to any particular construction of handle for the wrench; but

lVhat I do claim, and desire to secure by Letters Patent, is.

1. The combination, substantially as hereinbefore set forth, of the wrench-shank having the hourglass-shaped recess, the outer jaw having the screw-threaded tang, and the fluted nut playing in the transverse recess.

2. The combination, substantially as here inbefore set'forth, of the wrench-shank having the hour-glass recess and the longitudinal recess and its shoulder, the outer jaw and its screw-threaded shank, the nut acting upon said shank through such recess and the opposing stationary jaw.

3. The combination, substantially as hereinbefore set forth, of the wrench-shank having the hour-glass transverse recess and the longitudinal recess the outer jaw with its inhel'ore set forth, with &L wrench, of :i re- 10 screw-threaded shank, the spring pressing I versihlejzurhaviugtwo ornloreratchet-faces, thereon, and the fluted nut playing in the a removable pin to permitinterchange of said transverse recess to adjust the outer jaw. l faces, and an opposing vibratory jaw.

&. The combination, substantially as hereinbefore set; forth, with a \VlOllC-ll, of a reversible jaw having two or more toothed wearing-faces.

5. The combination, substantially as here- FRANK COOK.

Witnesses:

L. SCHLESINGER, (7/. II. GURNEY. 

